Photos and text guide diagnosis of asphalt roof failures how to identify and explain roof shingle failures obtain claims assistance contribute failure information at this website.
Wind zipper pattern roof.
Are there adjoining shingles that have.
During your roof assessment have you identified displaced shingles on the roof.
The following is a list of questions to consider when you as the inspector are assessing a shingle roof for reported wind damage.
As a result uplift pressures develop on the roof.
Some problems stem from environmental temperatures.
Wind damaged roof faqs.
How to recognize asphalt roof shingle or other roof type damage by wind hurricane storms and how to get.
Are these displaced shin gles the result of wind forces or from slippage.
We have heard for years from the carrier s that zippering is always a condition of bad installation and not wind uplift.
Irc table r602 3 1 footnote f g.
The review of surrounding objects for wind damage the review of the pattern of the damage and the close up examination.
When wind speed is 110 mph or greater and when median roof height is between 25 and 35 feet use 8d ring shank nails 0 135 x 2 1 2 inches within 48 inches of gable end walls.
We can t blame all roofing repair on the wind.
Wind damage to asphalt shingles installed in.
The shingles that exhibit these damages may be examined further for additional information.
Roof wind damage assessment and caused for asphalt roof shingle defects.
This tool enables you to determine the expected wind uplift pressures on a roof as well as the fastening patterns required to attach the roof system to resist these pressures.
These unbonded overlaps will not vary in direction or increase decrease in areas of the roof where wind uplift would be greater less.
Frequently asked questions and answers about how to assess repair or prevent wind damage to roofs.
Luis esteves of adjusters international forwarded this photograph depicting a zippering roof during a windstorm.
The result was a zipper like pattern of missing tabs that extended upslope from the eaves to the ridges fig.
Well here is the smoking gun.
When shingles start lifting in a uniform diagonal stairway pattern they are known as racked when they lift in a straight up line like a zipper it is known as zippering go figure.
Wind damage on multiple roof slopes facing multiple directions requires wind to have traversed the roof from multiple directions.
When wind speed is 100 mph or greater block panel edges perpendicular to gable end wall framing members in the first two bays of.
This article series discusses how to evaluate wind damage to asphalt shingle roofs and tells readers how to identify explain the most common failure mechanisms such as improper nailing failure of shingles to seal.
After collecting pertinent information about the project the pressures and fastening patterns will be calculated and made available to you in report form.
Wind interacting with a roof is deflected over and around it.
